From 0b8976ea15b66deefce20771c7164326315f07c0 Mon Sep 17 00:00:00 2001 From: Bruno BELANYI Date: Fri, 10 Dec 2021 13:24:02 +0100 Subject: [PATCH 1/4] 2021: d10: ex1: add input --- 2021/d10/ex1/input | 110 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 2021/d10/ex1/input diff --git a/2021/d10/ex1/input b/2021/d10/ex1/input new file mode 100644 index 0000000..3a3d7bd --- /dev/null +++ b/2021/d10/ex1/input @@ -0,0 +1,110 @@ +<{[[({([{<[[([()<>]<<><>>)<[[]()]{<>()}>][<(()[])<()<>>>]]<(<(<><>)(())>)[<([]()){<><>}>{{()<>}<{}>}]>>[({ +<<({<{{{[(<{([{}{}]{{}[]}){({}())}}<<[[][]](()<>)>[{<><>}<{}<>>]>>(<[[()]([]{})]((()<>)[()() +({<<({[<[[<[([()])]<<<{}<>><()[]>>[[()<>]<[]()>]>>([((()[])[()])]{[[()()]<<><>>][{<>[]}(()<>)]}) +(([[<<[{(({{{(()<>)[()()]}[({}<>)[[][]]]}([{{}<>}<[]()}]{[[][]][()<>]})})(([({[]{}}{[][]}) +({{<[[<<{{[{[<{}{}>{[]{}}]<([]{}){()[]}>}]<{([<><>]([]<>)){({}())({}<>)}}[[<{}<>>([]{})][[()[]]]]>}}>>]] +[(<<<{([[[<{(<()<>>{<><>})(<[]<>>([][]))}[<[{}[]]>{<[]>(<><>)}]>([{{[]()}{[]()}}([<>[]][{}<> +<[{[{{([<(<{{[{}<>]({}{})}{{<>[]}(()())}}(<<<>{}>(<><>)>(<<>{}>[[]<>]))>)>[{[<[[()<>]{{}<> +{(<<[([<{<<<({()()}(<><>)}{((){})([]())}>>[<{<[]<>>{[]{}}}([()()])>]>}>]{{([{<{{[]<>}(<>)}<({}( +((<[{(({([<{(<[][]>)[<<>{}><()<>>]}<{<{}{}>}[{()[]}<{}[]>]>>])})<[{[{([{[]()}((){})][<<>()><()()>])>]}][[({{[ +[[{([[<<[({[<<[]{}>{[][]}>(<()<>>[{}()])][([{}[]}[<><>]){[{}()]}]}[<<<{}<>>{()<>}>(<{}()>([]()))>{[[<><>][ +{{{<[([[{<[<{([]{}>{<>()}}{<(){}><()()>}>[{[[][]](<>())}[{[]<>}[<>[]]]]]{<{{{}[]}{<><>}}[[()()](< +(([{(({[[[[{(<<>[]>((){})){<()<>><[]{}>}}{[{{}()}(()[])]((()){()<>})}]]]<[<<{(()[])<{}[]>}{ +{<<([(<([{{(<(()<>)[[][]]>{[[]{}]{(){}}})[{<(){}>[[]<>]}]}}])[[[([[{()()}{<>[]}]{[()]{[][]}}]<[(( +[{<<{<([(<[<{<{}[]>{{}[]}}(([]()))>{([(){}]<()[]>)(<[][]>{[]<>})}]>[{<<{<>()}[{}[]]>{(<><>)}>{[<[]<>>{()[]}]< 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+(({({[<<[<[([<<><>){[]{}}][<()<>><[]<>>])({[{}<>]<[]<>>}<({}{})[{}[]]>)][{((<><>)(()[]))}[<<{}()>{<> +<((<[(<(<[[([{(){}}<<>()>]({(){}}{(){}}))]][{{[{[][]]{<>{}}]{[{}<>]([]{})}}}[<{[[]{}][<>()]}[(()[])< +{((<<{({<[([(([]())([]()))(<[][]>{()})])<<[<<>[]>[<>())](<()<>><()()>)>>]>{{[{<[<>{}]<[]<>>>}<{{<><>}< +{<<<<[((<{({<{<>[]}{<>()}><{<><>){<>()}>}([[[]()][(){}]]<<()<>>{<><>}>)){[{{<>[]}{[]()}}{(<>()) +({<<<<[{<{<{(<{}{}><()[]>)[{<>{}}]}>(<[([]{}){<><>}]{<<><>>[()[]]}}<[{()[]}{()[]}][{{}[]}{[][]}]>)}>}] +({({{<{{{[<{{(<><>)}({[]()}{<><>})}{<[{}[]]<[]<>>>[(<>[]){()()}]}><[[<<>()><[][]>]]>]<<[{[[]()]( +<{[<([<[({([{(<>{}){()}}<([]<>)[{}{}]>)[[<()[]><{}<>>][(<>{})[()()]]]){<{({}){{}{}}}<{<>()}[[ +{((({[{<{[<({[{}()]({}{})}<(<>)(()())>)({[[]{}](<><>)}[<<>[]>[<>[]]])><<[{[]<>}][([][])<[]()>]>( +({[((([<[(<{[(<>[])(()[])]}<[([][])([]<>)]<(()())>>>((([(){}])<(<>())<<><>>>)<[[()<>>{{}{} +[{{((<{[(<{[{{[][]}{<><>}}[[()[]]<[][]>]]<<({}[])((){})>>}>[(<([[]()]<{}[]>)([{}<>])>({<<>[]>(<>[])}[( +((<((<[<(<[{(<[]()>[()[]])((())(()[]))}{[[{}<>]([]{})]<[[]()]>}]>)><([<[<{[]<>}<{}[]>>[[(){}]]]({[[][]]{ +[(([([(([<<(<{<>}{[][]}>)[{[()<>]{{}{}}}({{}{}}<[]()>)]>>{([({<><>}<[]>){<{}{}>[()<>]}]<<[[]{}]{{ +[(<{<[[{[<<{<[[]<>]<[]()>>{{[]<>}}}><[[{{}()}([]<>)]][({{}<>}{{}{}})<[[][]](()())>]>><<({([]{})<<>{}>}){ +<{[<[(<<[[[[{<{}[]><[]<>>](<{}[]>{()[]})](<[<>()][[][]]>([()()]<<>()>))]]({([<()[]>[{}()]])<{[[]()]}{<[][ +<{{{([[([{{{<({}[])>}}<<({<>{}}{{}()))<({}{}){[]{}}>>[[(<>())[{}[]]]<<[]{}>{<>[]}>]>}([{[<< +[{<(({{<[{[[([<>{}]{<>{}})(((){})[{}[]])][{<{}<>>}[([]{})<{}>]]]}{<<([<>{}][()[]})[{{}}<{}()>]>( +[((<[{<<[<[{[{{}()}[{}[]]]<[<>[]][{}<>]>}]>]{[([([[]<>]{{}[]})[<(){}>[()[]]]]<<({}[])<[]()>>[( +[{([<{([(({(<[[]<>]>{({}()){<><>}})([([]())[[]<>]])}(<[({}())(<>())]<{()<>}[[]<>]>>)){{([[<><>][()[]>](<[][]> +<<(<<<{{{<<(<<[]<>>{<>()}>[<[]>])<{<{}<>>}{[{}{}]<<>[]>}>><{<<<>{}>({}<>)>}{([()[]]<<>()>)(<<><>><[]{}>)}>>< +{[<<[{{(<<[((({}{})[{}{}])(({}<>)[{}()]))]>{([[[(){}]<{}<>>][[{}[]]{()[]}]](<{[]{}}(<>[]>>))}>)}[(< +<{{[[<[[[(((({<><>}{{}{}})<[<>()]([]())>)[<{{}<>}>{((){})[[][]]}]))<{<{[[]()]<[][]>}{<[]<>>(<> +{<[<<([[[[{{<({}<>)<{}()>>[(<>())({}[])]}<{([][])({}<>)}>}(({[<>{}]{[]{}}}<(<>{})>)[<{[][]}{[][]}>{({}()){ +[[({{[(((({<{{<><>]}{(<><>){<><>}}>(<[()<>]<{}{}>>((<><>){<>[]}))}{<[[{}[]]([][])][{{}[]}[ +[{{<([((<<{(((<><>)<(){}>))((({}[]){<>()})(<{}()}({}{})))}><[<<{<>[]}[()<>]>{[<>{}]{[]()}}>{{ +[<{<{{({{<<<{[<><>]<[][]>}<<(){}>(<>)>>>([<{[]()}{{}[]}>{<{}()><[]<>>}]([([]())[[]]]([[]()]<<>{}>)))> +<[{<[(<{{([[<[{}{}]><([]<>)(()())>][<((){})[[]()]>[([]<>){<><>}]]]{<{<[]<>><<>>}{<{}<>><[]{} +{[((((((({([([(){}]([]<>)){[{}](<>[])}]{[<<>()>([]<>)]<<[][]>{[]<>}>})<<[{{}[]}(<><>)]<[()<>] +([({(([[[([[((<>{}){{}{}}]{[()<>]((){})}]((({})(<>[])){[{}{}]<<>()>})]{({(())[<>{}]}((<>{}) +{<[<{(<[{<[{(<{}()>)[<<>[]>(()<>)]}([{()[]}<{}<>>])}(({<[]{}><{}{}>}([[]<>]{{}()})){[[{}<>] +<<({[[<<[([(<[<><>]{<>{}}>{<(){}>(()())})<{[<>{}]<()[]>}>]<{[{<>{}}<<>()>]<{{}()}[()<>]>}<[[{}<>][{ From f69a351a0c23fdfec8a4ac47751fd022e9372cd9 Mon Sep 17 00:00:00 2001 From: Bruno BELANYI Date: Fri, 10 Dec 2021 13:24:20 +0100 Subject: [PATCH 2/4] 2021: d10: ex1: add solution --- 2021/d10/ex1/ex1.py | 51 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100755 2021/d10/ex1/ex1.py diff --git a/2021/d10/ex1/ex1.py b/2021/d10/ex1/ex1.py new file mode 100755 index 0000000..89d462d --- /dev/null +++ b/2021/d10/ex1/ex1.py @@ -0,0 +1,51 @@ +#!/usr/bin/env python + +import itertools +import sys +from typing import List, Optional + + +def solve(input: List[str]) -> int: + def find_illegal_char(input: str) -> Optional[int]: + chunks: List[str] = [] + ends_to_start = { + ")": "(", + "]": "[", + "}": "{", + ">": "<", + } + + for i, c in enumerate(input): + # Is it a chunk beginning + if c not in ends_to_start: + chunks.append(c) + continue + # Is it matching the last element on the chunk stack + current = chunks.pop() + # If not, corruption has been found + if ends_to_start[c] != current: + return i + + return None + + score = { + ")": 3, + "]": 57, + "}": 1197, + ">": 25137, + } + + return sum( + score[line[find_illegal_char(line)]] + for line in input + if find_illegal_char(line) is not None + ) + + +def main() -> None: + input = [line.strip() for line in sys.stdin.readlines()] + print(solve(input)) + + +if __name__ == "__main__": + main() From d45a8dd667505c755a6aed2b585744a948d69b47 Mon Sep 17 00:00:00 2001 From: Bruno BELANYI Date: Fri, 10 Dec 2021 13:24:31 +0100 Subject: [PATCH 3/4] 2021: d10: ex2: add input --- 2021/d10/ex2/input | 110 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 2021/d10/ex2/input diff --git a/2021/d10/ex2/input b/2021/d10/ex2/input new file mode 100644 index 0000000..3a3d7bd --- /dev/null +++ b/2021/d10/ex2/input @@ -0,0 +1,110 @@ 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+[<{<{{({{<<<{[<><>]<[][]>}<<(){}>(<>)>>>([<{[]()}{{}[]}>{<{}()><[]<>>}]([([]())[[]]]([[]()]<<>{}>)))> +<[{<[(<{{([[<[{}{}]><([]<>)(()())>][<((){})[[]()]>[([]<>){<><>}]]]{<{<[]<>><<>>}{<{}<>><[]{} +{[((((((({([([(){}]([]<>)){[{}](<>[])}]{[<<>()>([]<>)]<<[][]>{[]<>}>})<<[{{}[]}(<><>)]<[()<>] +([({(([[[([[((<>{}){{}{}}]{[()<>]((){})}]((({})(<>[])){[{}{}]<<>()>})]{({(())[<>{}]}((<>{}) +{<[<{(<[{<[{(<{}()>)[<<>[]>(()<>)]}([{()[]}<{}<>>])}(({<[]{}><{}{}>}([[]<>]{{}()})){[[{}<>] +<<({[[<<[([(<[<><>]{<>{}}>{<(){}>(()())})<{[<>{}]<()[]>}>]<{[{<>{}}<<>()>]<{{}()}[()<>]>}<[[{}<>][{ From aee13702a5b81973c8d9e77e1729a66aec3e66f0 Mon Sep 17 00:00:00 2001 From: Bruno BELANYI Date: Fri, 10 Dec 2021 13:24:45 +0100 Subject: [PATCH 4/4] 2021: d10: ex2: add solution --- 2021/d10/ex2/ex2.py | 82 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100755 2021/d10/ex2/ex2.py diff --git a/2021/d10/ex2/ex2.py b/2021/d10/ex2/ex2.py new file mode 100755 index 0000000..377b73d --- /dev/null +++ b/2021/d10/ex2/ex2.py @@ -0,0 +1,82 @@ +#!/usr/bin/env python + +import itertools +import sys +from typing import Iterator, List, Optional + + +def solve(input: List[str]) -> int: + def find_illegal_char(input: str) -> Optional[int]: + chunks: List[str] = [] + ends_to_start = { + ")": "(", + "]": "[", + "}": "{", + ">": "<", + } + + for i, c in enumerate(input): + # Is it a chunk beginning + if c not in ends_to_start: + chunks.append(c) + continue + # Is it matching the last element on the chunk stack + current = chunks.pop() + # If not, corruption has been found + if ends_to_start[c] != current: + return i + + return None + + def complete_line(input: List[str]) -> str: + chunks: List[str] = [] + start_to_end = { + "(": ")", + "[": "]", + "{": "}", + "<": ">", + } + + for c in input: + # Is it a chunk beginning + if c in start_to_end: + chunks.append(c) + continue + # Otherwise we must match the last open chunk + assert start_to_end[chunks.pop()] == c # Sanity check + + return reversed(list(start_to_end[c] for c in chunks)) + + def score_completion(completion: str) -> int: + char_score = { + ")": 1, + "]": 2, + "}": 3, + ">": 4, + } + + score = 0 + + for c in completion: + score *= 5 + score += char_score[c] + + return score + + def score_completions(completions: Iterator[str]) -> int: + scores = sorted(map(score_completion, completions)) + return scores[len(scores) // 2] + + incomplete_lines = filter(lambda line: find_illegal_char(line) is None, input) + completions = map(complete_line, incomplete_lines) + + return score_completions(completions) + + +def main() -> None: + input = [line.strip() for line in sys.stdin.readlines()] + print(solve(input)) + + +if __name__ == "__main__": + main()